Lathing material



4July 23, 1946.

y J; L. FINCK I LATHING MATERIAL Filed Oct. l5, 1945 v coating on thebuilding paper.

Patented July 23, 1946 UNITED STATES PATENT oFFicB LATHING MATERIALJoseph L. Finck, Brooklyn, N. Y.

Application October 13, 1945,Y Serial No. 622,119

' The present invention relates generally to lathing material and moreparticularly'to a metal lathing material, such as expanded metal, or thelike.

One of the objects of the present invention is to provide a self-furringmetal lathing material. Thus the present lathing material when appliedagainst the studs or sheathing on the inside or outside lof a frame wallor against a brick wall provides an air space lbetween the lathingmaterial and the wall.

Another object of the present invention is to provide such aself-furring lathing material which will have a substantially monoplanarplaster-receiving front face and which will be substantially free of allobstructions on its plaster-receiving face so that the plasterer mayperform the plastering operation with facility.

A still further object of the present inventionV is to provide a metallath which also constitutes an insulating building material. For thispurpose,'the metal lath is -backed by a ilexible sheathform insulatingmaterial in the form of a building paper coated with aluminum oraluminum foil. The aluminum coatedr building paper, with the aluminumcoat on its rear side, namely, on the side exposed to the wall, servesto reflect radiated heat and prevent the transmission of radiated heatacross the air space between the lathing and the wall.

The present invention further aims tovprovide metal lathing materialWhich is combined with ametal coated building paper so as to convertthelathing into an insulating material, the combination or structurebeing such as to prevent any of the plaster or any of the liquids in theplaster vfrom gaining access to the aluminum Such liquids would corrodethe aluminum foil or any other aluminum coating onthe building paper. Inthe present invention, therefore, furring or spacing strips or grips areemployed which serve to grip, fix, and rmly attach the metal coatedbuilding paper onto the back of the metal lath.

Other objects and advantages of the present invention will be understoodby persons skilled in the art from a reading of the followingspecication and from the accompanying drawing which illustrates thepresent invention.

In the drawing:

Fig. 1 is a diagrammatic cross section of the lathing material;

Fig. 2 is a cross section of this lathing material mounted on a wall;

6 Claims. (C1. 'z2-117) Y 2 Fig. 3 is a section taken along the Fig. 2;and 1 y Fig. 4 is a face view of the lathing material. The presentinvention aims to provide a building material which comprises Within itpermanently assembled the desired elements so that the same serves as aplaster lath, and as an insulat-y with metal such as aluminum oraluminum foil.l Any suitable lathing material may be employed in theconstruction of the p resent building material. As illustrated in theaccompanying drawing, the expanded metal lath I0 is employed in the`present assembly. Such lathing material permits the plaster to enter theopenings in the material and thus becomes located with and to thelathing material. In the present invention the back face of the Vmetallath I0 is lined with the building paper II which may be in the form'vof any suitable asphalt coated paper, or kraft paper, or any othersuitable paper. On its back face, namely, on the face that would beexposedv to the Wall, thebuilding paper II lis adhesively covered withaluminum foil I2. The paper lying against the back of the metal lathwill prevent the extrusion of excessive amounts of plaster through theopenings in the metal lath.

In order to maintain the aluminum coatedl building paper and the metallath in iixed and permanent assembly, the metal lath'is provided`lengthwise or widthwise ofthe metal lath, as,`

desired. It will be noted that theser ribs I3l are formed by crimpingthe metal lath. While these ribs or crimped portions should lextendentirely across thedimension' of the sheets of metal lath, their depthmay be varied.

Essentially the depth of the rib or crimping should be large enough sothat it may be gripped by the spacing or furring strip I4. The furringstrip I4 may be employed in the form of the spaced short sections. It ispreferred, however, that the same be coextensive with the ribs I3 sothat thereby it may offer rigid support to thatl portion of the metallathing. The aluminum coated building paper is also suitably crimped, asshown, and its crimping overlies the ribs I3.

une 3-1-3 'or The furring stripsA I4 serve to grip and rml Y attach thebuilding paper to the metal lath.

operation with the result that the curved portions of the'side walls ofthe furring strip I4 form a rigid and firm assembly together with thealuminum coated building paper and the ribs I3.

ceive nails for mounting the lathing on the wall and to space the lathfrom the wall.

therassembly is subjected to a further crimping.v

2. A self-furring lathing comprising in combination, a metal lathingmaterial Vhaving a plaster receiving front face and a rear face, the

material having integrally formed ribs on its rear A face, a layer ofpaper on its rear face, the paper bearing a coating of aluminum on itsrear face, gripping means disposed over said ribs serving to hold thepaper in assemblyiwiththe 'metal lath to receive nails for mounting thelathing on the wall and to space the lathing from the Wall.Y

3. An insulating building material `comprising Vin combination, a metallathing material having The depth vofthe furring stripv Ill-'may beVvaried use to which the material is to be put and will depend,ofcourse, upon the size of the air. space V,as desired and Vwill dependupon the particular that may be desired. Thevbottom of the furring Ystrip I4 is preferably at s0 that it will rest solidlyV Vagainst thesurface'to which it is applied.

'jIn' use, the material is placed against the wall with; the' bottomofthe furring strips resting solidly 'against' them and nails V2lv aredriven through the ribs I3 and the bottoms of the furring strips Il,as'shown, andinto Wall 20. The' broad heads '22 of the nails 2| willtend to lodge in the ared portionV of'the channel and will thus serve togripVV the expanded' metal and the aluminum coated VVbuildingpaperbetween its head and the ii'aredportionsof the furring strip I4;

It will n'ow be understood that the present material'. constitutes "aunitary productwhichV 3 Vforms "a self-furring andv heat insulatinglathing A *material V,Themetal coated building paper is heldagainst themetallathing rby friction exerted by the ffurring strips against theribs. The build',-

`. ing paper thus can well outstand'the force exerted by the'plastererVin applying the plaster'on the lath. The v'paper willv not tear andwillserve to limitthe amount of extrudedf'and wasted plaster. Thel'rib's orridges I3 add rigidity to the metal lath and generally'improve therigidity of the finished plaster wall. 'It will also be. appreciatedthat the present building material may be in# stalled' without anyVoperations other than those customarily employed in the installation of'metal Y lath inV that the' only operations that AneedV to beYperforrnedon the building job is driving the nails 2'I' through the'metal and onto the wall.

ffcl'aim: Y Y Y l Y VV1.7fAn insulating building material comprising incombination,V` a metal lathing material' having Y a rplaster receivingfront face and a rear face,I the Vmaterial having on its rear facespaced parallel Qri'bs, 'a layer of paper on'its rear face, the paperVbearing a coating of heat reflecting material on it'sjrearjface,Yspacing and gripping strips disposed'over said ribs'V serving to'holdthe paper in assembly .with the metal'lath, said strips being Y fsubstantially channel shapedfandserving to ref-V a plaster receivingfront face and a rear face, the l material having integrally formed ribson its rear Vface; alayer of paper on its rear face, the paper bearing acoating of aluminum on'its rear face, gripping stripsdisposed overV saidribs serving to hold the paper in assembly with the metal lath, saidgripping strips. being vsubstantially*channel, shaped and serving to'receive nails forV mounting the lathing on the wallv and to space thelathing from the wall. Y 4; An insulating building, material comprisingin combination, a metal lathing material having in assembly with Vthemetal lath, sai'd gripping strips. being substantially channel shaped'andV i, having outwardly flared free'edges, the"v strips a substantiallymonoplanar plaster receiving front face and a rear face,Y the materialhaving in-.

tegrally formed ribs onv its'rear face, a layer oi paper on its rearface, the paper bearing a coat;

ing ofaluminum onits rear face, grippingstrips l disposed over said ribsserving to hold the paper serving to receive lnails for mounting thelathingY on the wall and to permit the headrof the nail to lodge in theilared portion of the strip.

A self-furring lathing'comprising in combination, a metal lathingmaterial having a plaster receiving front face and a rear face, thematerial having integrally formed ribs on its rear face, alayer of paperon its rear face,r and spacing strips disposed over and grippingYsaid-ribs,

said strips being substantially channel-shaped and serving to receivenails'for mounting thev Y lathing on the wall and to space'the lathingfrom thewall, said strips also serving to hold' thev paper in assemblywith the metal lath.

A self-ruiming lathing comprising meomr bination,r a metallathingmate'rial having av plaster receiving front face and a rearfacegthe material having parallel. reentrant strips forming ribs on itsrear face,. a layer of paper on itsIear face, and spacers disposedoverand gripping said` Y ribs, said spacersbeing substantiallyvch-annelshaped, and having outwardly liared free edges,

thev spacers serving toV receive nailsf-or: mountingA the lathing on thewall, said spacersvalsol serving to hold the paperin` .assemblywiththe-'metall'

